Total Equity and Other Comprehensive Income (Accumulated Other Comprehensive Income (Loss) Components) (Details) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
Total Equity And Other Comprehensive Income [Abstract]
Net unrealized securities gains (losses), pretax	$ 1,027	$ 150
Net unrealized securities gains (losses), after-tax	664	95
OTTI losses on debt securities, pretax	(955)	(1,021)
OTTI losses on debt securities, after-tax	(617)	(646)
Net unrealized gains on cash flow hedge derivatives, pretax	1,154	824
Net unrealized gains on cash flow hedge derivatives, after-tax	731	522
Pension, other postretirement and postemployment benefit plan adjustments, pretax	(584)	(598)
Pension, other postretirement and postemployment benefit plan adjustments, after-tax	(370)	(380)
Other, net pretax	(20)	(47)
Other ,net After-tax	(11)	(22)
Accumulated other comprehensive income (loss), pretax	622	(692)
Accumulated other comprehensive income (loss), after-tax	$ 397	$ (431)

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at fiscal year-end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, and unrealized gains and losses on certain investments in debt and equity securities as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge, before tax.

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Accumulated change, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's increase (decrease) in deferred hedging gains or losses, before tax.

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The total of net (gain) loss, prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost, before tax.

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The accumulated adjustment out of other comprehensive income, before tax.

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The accumulated adjustment out of other comprehensive income, after tax.

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Accumulated appreciation or loss in value of the total unsold securities as of the reporting period date after tax.

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Accumulated appreciation or loss in value of the total unsold securities as of the reporting period date, before tax.

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Accumulated Other Than Temporary Impairment Losses On Investments After Tax

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Accumulated Other Than Temporary Impairment Losses On Investments Before Tax

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Total Equity And Other Comprehensive Income

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Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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The total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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